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EP0530087A1 - Naphthylethylurea and naphthylethylthiourea compounds, process for their preparation and pharmaceutical compositions containing them - Google Patents

Naphthylethylurea and naphthylethylthiourea compounds, process for their preparation and pharmaceutical compositions containing them Download PDF

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Publication number
EP0530087A1
EP0530087A1 EP92402321A EP92402321A EP0530087A1 EP 0530087 A1 EP0530087 A1 EP 0530087A1 EP 92402321 A EP92402321 A EP 92402321A EP 92402321 A EP92402321 A EP 92402321A EP 0530087 A1 EP0530087 A1 EP 0530087A1
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Prior art keywords
formula
ethyl
carbon atoms
preparation according
compound
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German (de)
French (fr)
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EP0530087B1 (en
Inventor
Daniel Lesieur
Said Yous
Patrick Depruex
Gérard Adam
Pierre Renard
Bruno Pfeiffer
Béatrice Guardiola-Lemaitre
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Laboratoires Servier SAS
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ADIR SARL
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C335/00—Thioureas, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C335/04—Derivatives of thiourea
    • C07C335/06—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms
    • C07C335/10—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton
    • C07C335/12—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton the carbon skeleton containing six-membered aromatic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/42—Amides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/20—Hypnotics; Sedatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/24—Antidepressants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/26—Psychostimulants, e.g. nicotine, cocaine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
    • C07C275/20—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton
    • C07C275/24—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an unsaturated carbon skeleton containing six-membered aromatic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q7/00—Preparations for affecting hair growth
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/02—Systems containing only non-condensed rings with a three-membered ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated

Definitions

  • the present invention relates to new naphthylethylureas and naphthylethylthioureas, their preparation process and the pharmaceutical compositions containing them.
  • the Applicant has now discovered new compounds having the remarkable property of binding in an intense and specific way to the melatonin receptors.
  • the pharmacological study of the compounds of the invention has in fact shown that they are not very toxic, endowed with important activities on the central nervous system and in particular, sedative, anxiolytic, antipsychotic, analgesic properties have been noted as well as microcirculation which make it possible to establish that the products of the invention are useful in the treatment of stress, anxiety, seasonal depressions, insomnia and fatigue due to jetlag, schizophrenia, panic attacks, melancholy, appetite disorders, insomnia, psychotic disorders, epilepsy, Parkinson's disease, senile dementia, various disorders related to normal or pathological aging, memory loss, Alzheimer's disease, as well as in cerebral circulation disorders.
  • the dosage varies according to the age and weight of the patient, the route of administration, the nature of the therapeutic indication, or possibly associated treatments and ranges between 0.1 mg and 1 gram per 24 hours.
  • the isocyanates and isothiocyanates of formula (III) are commercial or can be easily prepared according to methods known to those skilled in the art, such as the action of phosgene or thiophosgene on the corresponding primary amines.
  • the amines of formula (II) can be prepared according to the process described for the following preparations, or according to an equivalent process.
  • EXAMPLE 3 N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-ETHYLUREE
  • EXAMPLE 4 N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-BUTYLUREE Melting point : 106-107 ° C
  • EXAMPLE 5 N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-BENZYLUREE
  • EXAMPLE 6 N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N ′ - (4-CHLOROPHENYLMETHYL) UREE
  • EXAMPLE 7 N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-CYCLOPROPYLMETH
  • the binding to melatonin receptors of the compounds of the invention was carried out according to conventional techniques on receptors of sheep pars tuberalis (Journal of Neuroendocrinology (1989), 1 (1), 1-4).
  • the compounds of the invention bind in an extremely specific manner to the melatonin receptors with, for the most refined of them, an affinity of more than 100 times greater than that of melatonin itself.
  • mice 50 mg.kg ⁇ 1 of pentobarbital are injected intraperitoneally into mice (22-25 g). The time of onset and the duration of sleep are measured. We admit that there is sleep when the animals lose the turning reflex. The test compounds are administered intraperitoneally 30 minutes before the injection of the barbiturate. The compounds of the invention increase the duration of sleep induced by pentobarbital.
  • Acute toxicity was assessed after oral administration in groups of 8 mice (26 ⁇ 2 grams). The animals were observed at regular intervals during the first day and daily for two weeks after treatment. The LD50, resulting in the death of 50% of the animals, was evaluated. The LD50 of the products tested is greater than 1500 mg.kg ⁇ 1 for the compounds of the invention studied, which indicates the low toxicity of the compounds of the invention.

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  • Chemical Kinetics & Catalysis (AREA)
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  • Psychiatry (AREA)
  • Dermatology (AREA)
  • Hospice & Palliative Care (AREA)
  • Anesthesiology (AREA)
  • Pain & Pain Management (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Compounds of formula (I): <IMAGE> for which the values of R, R1, R2 and X are defined in the description, which can be used as medicaments.

Description

La présente invention concerne de nouvelles naphtyléthylurées et naphtyléthylthiourées, leur procédé de préparation et les compositions pharmaceutiques qui les contiennent.The present invention relates to new naphthylethylureas and naphthylethylthioureas, their preparation process and the pharmaceutical compositions containing them.

On connait de la littérature, notamment du document EP 344 425, qui constitue l'art antérieur le plus proche, des naphtyléthylurées dotées de propriétés antihypercholestérolémiantes.We know from the literature, in particular from document EP 344 425, which constitutes the closest prior art, naphthylethylureas endowed with antihypercholesterolemic properties.

La demanderesse a maintenant découvert de nouveaux composés possédant la propriété remarquable de se lier de façon intense et spécifique aux récepteurs de la mélatonine.The Applicant has now discovered new compounds having the remarkable property of binding in an intense and specific way to the melatonin receptors.

Ces composés possèdent de nombreuses et intéressantes activités pharmacologiques de par leur caractère agoniste ou antagoniste de la mélatonine.These compounds have numerous and interesting pharmacological activities due to their agonist or antagonist character of melatonin.

Outre leur action bénéfique sur les troubles du rythme circadien et du sommeil et les désordres saisonniers, ils possèdent d'intéressantes propriétés pharmacologiques sur le système nerveux central, notamment anxiolytiques, antipsychotiques, analgésiques, sur l'ovulation, la circulation cérébrale et l'immunomodulation.In addition to their beneficial action on circadian rhythm and sleep disorders and seasonal disorders, they have interesting pharmacological properties on the central nervous system, in particular anxiolytics, antipsychotics, analgesics, on ovulation, cerebral circulation and immunomodulation. .

Plus spécifiquement, la présente invention concerne les composés de formule générale (I) :

Figure imgb0001

dans laquelle :

  • R représente un atome d'hydrogène ou un groupement OR₃ dans lequel R₃ représente un atome d'hydrogène, un radical alkyle de 1 à 6 atomes de carbone en chaîne droite ou ramifiée, un radical cycloalkyle ou cycloalkényle contenant de 3 à 8 atomes de carbone, un aryle éventuellement substitué, un arylalkyle ou diarylalkyle éventuellement substitués dans lesquels la chaine alkyle comporte de 1 à 6 atomes de carbone,
  • R₁ représente un atome d'hydrogène ou un groupe alkyle contenant de 1 à 6 atomes de carbone en chaîne droite ou ramifiée,
  • X représente un atome d'oxygène ou de soufre,
  • R₂ représente un alkyle inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, un cycloalkyle de 3 à 8 atomes de carbone éventuellement substitué, un (C₃-C₈)cycloalkyl-(C₁-C₆)alkyle éventuellement substitué, un aryle éventuellement substitué, un arylalkyle éventuellement substitué dont la chaine alkyle comprend de 1 à 6 atomes de carbone, ou un diarylalkyle éventuellement substitué dont la chaine alkyle comprend de 1 à 6 atomes de carbone,
    avec la réserve que lorsque R et R₁ représentent un atome d'hydrogène et X représente un atome d'oxygène, R₂ ne peut pas représenter un radical phényle ou un radical phényle-2,6 disubstitué.
  • leurs sels d'addition à une base pharmaceutiquement acceptable,
  • leurs isomères, épimères, diastéréoisomères,
  • le terme "substitué" associé aux expressions "aryle", "arylalkyle", "diarylakyle", signifie que le ou les noyaux aromatiques peuvent être substitués par un ou plusieurs groupements choisis parmi alkyle inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, alcoxy inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, hydroxy, halogène, nitro, et trifluorométhyle,
  • le terme "substitué" associé aux expressions "cycloalkyle", "cycloalkylalkyle" signifie que le système cyclique peut être substitué par un ou plusieurs groupements choisis parmi halogène, alkyle inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, et alcoxy inférieur de 1 à 6 atomes de carbone linéaire ou ramifié,
  • par groupement aryle on entend groupement pyridyle, phényle, naphtyle, thiényle, furyle, pyrimidyle, indolyle, benzofuryle, benzothiényle, ou quinolyle.
More specifically, the present invention relates to the compounds of general formula (I):
Figure imgb0001
in which :
  • R represents a hydrogen atom or an OR₃ group in which R₃ represents a hydrogen atom, an alkyl radical of 1 to 6 carbon atoms in a straight or branched chain, a cycloalkyl or cycloalkenyl radical containing from 3 to 8 carbon atoms , an optionally substituted aryl, an optionally substituted arylalkyl or diarylalkyl in which the alkyl chain contains from 1 to 6 carbon atoms,
  • R₁ represents a hydrogen atom or an alkyl group containing from 1 to 6 carbon atoms in a straight or branched chain,
  • X represents an oxygen or sulfur atom,
  • R₂ represents a lower alkyl of 1 to 6 linear or branched carbon atoms, a cycloalkyl of 3 to 8 carbon atoms optionally substituted, a (C₃-C₈) cycloalkyl- (C₁-C₆) alkyl optionally substituted, an aryl optionally substituted, an optionally substituted arylalkyl in which the alkyl chain comprises from 1 to 6 carbon atoms, or an optionally substituted diarylalkyl in which the alkyl chain comprises from 1 to 6 carbon atoms,
    with the proviso that when R and R₁ represent a hydrogen atom and X represents an oxygen atom, R₂ cannot represent a phenyl radical or a disubstituted 2,6-phenyl radical.
  • their addition salts with a pharmaceutically acceptable base,
  • their isomers, epimers, diastereoisomers,
  • the term “substituted” associated with the expressions “aryl”, “arylalkyl”, “diarylakyle”, means that the aromatic nucleus or nuclei can be substituted by one or more groups chosen from lower alkyl of 1 to 6 linear or branched carbon atoms, lower alkoxy of 1 to 6 linear or branched carbon atoms, hydroxy, halogen, nitro, and trifluoromethyl,
  • the term "substituted" associated with the expressions "cycloalkyl", "cycloalkylalkyle" means that the ring system can be substituted by one or more groups chosen from halogen, lower alkyl of 1 to 6 linear or branched carbon atoms, and lower alkoxy of 1 with 6 linear or branched carbon atoms,
  • by aryl group means pyridyl, phenyl, naphthyl, thienyl, furyl, pyrimidyl, indolyl, benzofuryl, benzothienyl or quinolyl group.

La présente invention a également pour objet le procédé de préparation des composés de formule (I), caractérisé en ce que l'on traite une amine de formule générale (II) :

Figure imgb0002

dans laquelle R et R₁ ont les significations ci-dessus définies, par un isocyanate ou un isothiocyanate de formule (III) :

        X = C = N - R₂   (III)


dans laquelle X et R₂ ont les mêmes significations que dans la formule (I), de manière à obtenir les composés de formule (I),
composés de formule (I) qui peuvent être, si on le désire,

  • purifiés suivant une ou plusieurs méthodes de purification choisies parmi la cristallisation, la chromatographie sur colonne de silice, l'extraction, la filtration, et le passage sur charbon et/ou résine,
  • séparés, le cas échéant, sous forme pure ou sous forme de mélange, en leurs éventuels isomères optiques,
  • et/ou salifiés par une base pharmaceutiquement acceptable.
The present invention also relates to the process for the preparation of the compounds of formula (I), characterized in that an amine of general formula (II) is treated:
Figure imgb0002
in which R and R₁ have the meanings defined above, by an isocyanate or an isothiocyanate of formula (III):

X = C = N - R₂ (III)


in which X and R₂ have the same meanings as in formula (I), so as to obtain the compounds of formula (I),
compounds of formula (I) which may be, if desired,
  • purified according to one or more purification methods chosen from crystallization, chromatography on a silica column, extraction, filtration, and passage over charcoal and / or resin,
  • separated, where appropriate, in pure form or as a mixture, into their possible optical isomers,
  • and / or salified with a pharmaceutically acceptable base.

Les composés de formule (I) possèdent des propriétés pharmacologiques intéressantes.The compounds of formula (I) have interesting pharmacological properties.

L'étude pharmacologique des composés de l'invention a en effet montré qu'ils étaient peu toxiques, doués d'importantes activités sur le système nerveux central et en particulier, on a relevé des propriétés sédatives, anxiolytiques, antipsychotiques, analgésiques ainsi que sur la microcirculation qui permettent d'établir que les produits de l'invention sont utiles dans le traitement du stress, de l'anxiété, des dépressions saisonnières, des insomnies et fatigues dues aux décalages horaires, des schizophrénies, des attaques de panique, de la mélancolie, des troubles de l'appétit, de l'insomnie, des troubles psychotiques, de l'épilepsie, de la maladie de Parkinson, de la démence sénile, des divers désordres liés au vieillissement normal ou pathologique, des pertes de mémoire, de la maladie d'Alzheimer, ainsi que dans les troubles de la circulation cérébrale.The pharmacological study of the compounds of the invention has in fact shown that they are not very toxic, endowed with important activities on the central nervous system and in particular, sedative, anxiolytic, antipsychotic, analgesic properties have been noted as well as microcirculation which make it possible to establish that the products of the invention are useful in the treatment of stress, anxiety, seasonal depressions, insomnia and fatigue due to jetlag, schizophrenia, panic attacks, melancholy, appetite disorders, insomnia, psychotic disorders, epilepsy, Parkinson's disease, senile dementia, various disorders related to normal or pathological aging, memory loss, Alzheimer's disease, as well as in cerebral circulation disorders.

Dans un autre domaine d'activité, il apparaît que les composés de l'invention possèdent des propriétés d'inhibiteurs de l'ovulation, d'immunomodulateurs et qu'ils sont donc susceptibles d'être utilisés dans le traitement de certains cancers et qu'administrés par voie externe, ils sont utiles dans le traitement du psoriasis, de l'acné, de la séborrhée, protègent la peau et favorisent la pousse des cheveux. Ils peuvent également avoir un usage vétérinaire pour leur propriété sur le pelage.In another field of activity, it appears that the compounds of the invention have properties of ovulation inhibitors, immunomodulators and that they are therefore capable of being used in the treatment of certain cancers and that '' administered externally, they are useful in the treatment of psoriasis, acne, seborrhea, protect the skin and promote hair growth. They may also have veterinary use for their property on the coat.

La présente invention a également pour objet les compositions pharmaceutiques contenant les composés de formule (I) ou le cas échéant un de leurs sels d'addition à une base pharmaceutiquement acceptable, seuls ou en combinaison avec un ou plusieurs excipients ou véhicules inertes, non toxiques, pharmaceutiquement acceptables.The present invention also relates to pharmaceutical compositions containing the compounds of formula (I) or, where appropriate, one of their addition salts with a pharmaceutically acceptable base, alone or in combination with one or more inert, non-toxic excipients or vehicles. , pharmaceutically acceptable.

Parmi les compositions pharmaceutiques selon l'invention, on pourra citer, à titre d'exemples et de façon non limitative, celles qui conviennent pour l'administration orale, parentérale, nasale, per/ou transcutanée, rectale, perlinguale, oculaire ou respiratoire et notamment les comprimés simples ou dragéifiés, les comprimés sublinguaux, les sachets, les paquets, les gélules, les glossettes, les tablettes, les suppositoires, les crèmes, les pommades, les gels dermiques, les ampoules buvables et injectables.Among the pharmaceutical compositions according to the invention, non-limiting examples which may be mentioned are those which are suitable for oral, parenteral, nasal, per / or transcutaneous, rectal, perlingual, ocular or respiratory administration and in particular simple or coated tablets, sublingual tablets, sachets, packages, capsules, lollipops, tablets, suppositories, creams, ointments, dermal gels, drinkable and injectable ampoules.

La posologie varie selon l'âge et le poids du patient, la voie d'administration, la nature de l'indication thérapeutique, ou des traitements éventuellement associés et s'échelonne entre 0,1 mg et 1 gramme par 24 heures.The dosage varies according to the age and weight of the patient, the route of administration, the nature of the therapeutic indication, or possibly associated treatments and ranges between 0.1 mg and 1 gram per 24 hours.

Les exemples suivants illustrent l'invention, mais ne la limitent en aucune façon.The following examples illustrate the invention, but do not limit it in any way.

Les isocyanates et isothiocyanates de formule (III) sont commerciaux ou peuvent être préparés facilement selon les procédés connus de l'homme de l'art, comme l'action du phosgène ou du thiophosgène sur les amines primaires correspondantes. Les amines de formule (II) peuvent être préparées selon le procédé décrit pour les préparations suivantes, ou selon un procédé équivalent.The isocyanates and isothiocyanates of formula (III) are commercial or can be easily prepared according to methods known to those skilled in the art, such as the action of phosgene or thiophosgene on the corresponding primary amines. The amines of formula (II) can be prepared according to the process described for the following preparations, or according to an equivalent process.

PREPARATION 1 : 2-(7-METHOXY NAPHT-1-YL)ETHYLAMINEPREPARATION 1: 2- (7-METHOXY NAPHT-1-YL) ETHYLAMINE STADE A : (7-METHOXY 1,2,3,4-TETRAHYDRO-1-NAPHTYLIDENE) ACETATE D'ETHYLESTAGE A: (7-METHOXY 1,2,3,4-TETRAHYDRO-1-NAPHTYLIDENE) ETHYL ACETATE

Mélanger 50 g de 7-méthoxy tétralone, 40 g de bromoacétate d'éthyle et 150 cm³ de benzène par l'intermédiaire d'une ampoule à brome. Ajouter le mélange sur du zinc en aiguilles activé (18,6 g) selon Reformatsky et un cristal d'iode.Chauffer à 60°C et ensuite porter à reflux pendant 45 minutes.
   Hydrolyser sur de la glace en présence d'acide chlorhydrique. Extraire au benzène, sécher et porter à ébullition en présence de P₂0₅. Filtrer et porter à sec.
Le résidu est utilisé tel quel dans l'étape suivante.
Rendement : 80%Mix 50 g of 7-methoxy tetralone, 40 g of ethyl bromoacetate and 150 cm³ of benzene using a dropping funnel. Add the mixture to activated needle zinc (18.6 g) according to Reformatsky and an iodine crystal. Heat to 60 ° C and then bring to reflux for 45 minutes.
Hydrolyze on ice in the presence of hydrochloric acid. Extract with benzene, dry and bring to a boil in the presence of P₂0₅. Filter and bring to dry.
The residue is used as is in the next step.
Efficiency : 80%

STADE B : (7-METHOXY NAPHT-1-YL) ACETATE D'ETHYLESTAGE B: (7-METHOXY NAPHT-1-YL) ETHYL ACETATE

Mélanger 50 g de 7-méthoxy 1,2,3,4 tétrahydro-1-naphtylidène acétate d'éthyle à 7,35 g de soufre et chauffer à 215°C pendant 10 heures. Refroidir, ajouter 300 cm³ d'acétate d'éthyle, agiter pendant 30 minutes, filtrer. Porter à sec.
Le résidu obtenu est utilisé tel quel pour l'étape de saponification.
Rendement : 70%Mix 50 g of 7,3-methoxy 1,2,3,4 tetrahydro-1-naphthylidene ethyl acetate with 7.35 g of sulfur and heat at 215 ° C for 10 hours. Cool, add 300 cm³ of ethyl acetate, stir for 30 minutes, filter. Wear dry.
The residue obtained is used as it is for the saponification step.
Yield : 70%

STADE C : ACIDE (7-METHOXY NAPHT-1-YL) ACETIQUESTAGE C: ACID (7-METHOXY NAPHT-1-YL) ACETIC

Chauffer à reflux pendant 3 heures un mélange du 7-méthoxy napht-1-yl acétate d'éthyle obtenu précedemment dans 250 cm3 de soude à 20 % dans l'éthanol.
Porter à sec et laver le résidu à l'éther. Précipiter par un courant d'acide chlorhydrique gazeux.
Point de fusion : 155-156 °C
Rendement : 68%Heat at reflux for 3 hours a mixture of the 7-methoxy naphth-1-yl ethyl acetate obtained previously in 250 cm3 of 20% sodium hydroxide in ethanol.
Bring to dryness and wash the residue with ether. Precipitate with a stream of gaseous hydrochloric acid.
Melting point : 155-156 ° C
Yield : 68%

STADE D : CHLORURE DE L'ACIDE (7-METHOXY NAPHT-1-YL) ACETIQUESTAGE D: ACID CHLORIDE (7-METHOXY NAPHT-1-YL) ACETIC

Solubiliser à chaud l'acide 7-méthoxy napht-1-yl acétique obtenu précedemment dans 300 cm³ de chloroforme. Chauffer à reflux puis ajouter goutte à goutte le chlorure de thionyle. Porter deux heures à reflux et évaporer à sec. On obtient une huile qui cristallise par refroidissement. Le résidu obtenu est utilisé tel quel dans le stade suivant.Solubilize hot 7-methoxy naphth-1-yl acetic acid obtained previously in 300 cm³ of chloroform. Heat at reflux then add thionyl chloride dropwise. Bring to reflux for two hours and evaporate to dryness. An oil is obtained which crystallizes on cooling. The residue obtained is used as it is in the following stage.

STADE E : (7-METHOXY NAPHT-1-YL) ACETAMIDESTAGE E: (7-METHOXY NAPHT-1-YL) ACETAMIDE

Le chlorure de l'acide (7-méthoxy napht-1-yl) acétique obtenu précédemment est dissous dans 200 cm³ d'éther anhydre. Après refroidissement de la solution à l'aide d'un bain de glace-sel, ajouter sous agitation 200 cm³ d'une solution aqueuse d'amoniaque concentrée.
Agiter 30 minutes et essorer le précipité formé.
Recristalliser dans l'éthanol.
Rendement : 95%
Point de fusion : 201-202° CThe chloride of (7-methoxy naphth-1-yl) acetic acid obtained previously is dissolved in 200 cm³ of anhydrous ether. After cooling the solution using an ice-salt bath, add with stirring 200 cm³ of a concentrated aqueous ammonia solution.
Stir 30 minutes and wring out the precipitate formed.
Recrystallize from ethanol.
Yield : 95%
Melting point : 201-202 ° C

STADE F : (7-METHOXY NAPHT-1-YL) ACETONITRILESTAGE F: (7-METHOXY NAPHT-1-YL) ACETONITRILE

Mettre en suspension le (7-méthoxy napht-1-yl) acétamide obtenu au stade E dans 80 cm³ de tétrahydrofurane anhydre. Ajouter la triéthylamine.
Refroidir la solution dans un bain de glace puis ajouter goutte à goutte l'anhydride trifluoroacétique sous agitation magnétique.
Laisser agiter pendant une heure à température ambiante. Porter à sec. le résidu est repris par de l'eau. Essorer le précipité formé, sécher et recristalliser dans l'éther isopropylique.
Rendement : 83%
Point de fusion : 82-84° C
Caractéristiques spectrales :

Infrarouge
: 2240 cm⁻¹ CN
Suspend the (7-methoxy naphth-1-yl) acetamide obtained in Stage E in 80 cm³ of anhydrous tetrahydrofuran. Add the triethylamine.
Cool the solution in an ice bath then add dropwise the trifluoroacetic anhydride with magnetic stirring.
Leave to stir for one hour at room temperature. Wear dry. the residue is taken up in water. Squeeze the precipitate formed, dry and recrystallize from isopropyl ether.
Efficiency : 83%
Melting point : 82-84 ° C
Spectral characteristics :
Infrared
: 2240 cm⁻¹ CN

STADE G : 2-(7-METHOXY NAPHT-1-YL) ETHYLAMINESTAGE G: 2- (7-METHOXY NAPHT-1-YL) ETHYLAMINE

Placer dans un autoclave une solution de (7-méthoxy napht-1-yl) acétonitrile dans de l'éthanol saturé par de l'ammoniac. Ajouter du nickel de Raney et de l'hydrogène sous 300 atmosphères.
Agiter à 60°C pendant une nuit. Filtrer et évaporer le filtrat sous vide. L'huile ainsi obtenue est utilisée telle quelle comme matière première.Place a solution of (7-methoxy naphth-1-yl) acetonitrile in ethanol saturated with ammonia in an autoclave. Add Raney nickel and hydrogen under 300 atmospheres.
Stir at 60 ° C overnight. Filter and evaporate the filtrate under vacuum. The oil thus obtained is used as such as a raw material.

PREPARATION 2 : N-METHYL N[2-(7-METHOXY -NAPHT-1-YL) ETHYL] AMINEPREPARATION 2: N-METHYL N [2- (7-METHOXY -NAPHT-1-YL) ETHYL] AMINE

En procédant comme dans la préparation 1, mais en remplaçant au stade E l'ammoniac par la méthylamine, on obtient le N-méthyl (7-méthoxynapht-1-yl) acétamide qui est hydrogéné en composé du titre par le boranediméthylsulfure dans le tétrahydrofurane.By proceeding as in preparation 1, but replacing in stage E the ammonia with methylamine, the N-methyl (7-methoxynapht-1-yl) acetamide is obtained which is hydrogenated to the title compound by boranedimethylsulfide in tetrahydrofuran .

PREPARATION 3 : 2-(6-METHOXY NAPHT-1-YL) ETHYLAMINEPREPARATION 3: 2- (6-METHOXY NAPHT-1-YL) ETHYLAMINE

En procédant comme dans la préparation 1, mais en remplaçant au stade A la 7-méthoxy tétralone par la 6-méthoxy tétralone, on obtient le composé du titre.By proceeding as in preparation 1, but replacing in stage A 7-methoxy tetralone by 6-methoxy tetralone, the title compound is obtained.

PREPARATION 4 : 2-(5-METHOXY NAPHT-1-YL) ETHYLAMINEPREPARATION 4: 2- (5-METHOXY NAPHT-1-YL) ETHYLAMINE

En procédant comme dans la préparation 1, mais en remplaçant au stade A la 7-méthoxy tétralone par la 5-méthoxy tétralone, on obtient le composé du titre.By proceeding as in preparation 1, but replacing in stage A 7-methoxy tetralone by 5-methoxy tetralone, the title compound is obtained.

PREPARATION 5 : 2-(7-METHOXY NAPHT-2-YL) ETHYLAMINEPREPARATION 5: 2- (7-METHOXY NAPHT-2-YL) ETHYLAMINE

En procédant comme dans la préparation 1, mais en remplaçant au stade A la 7-méthoxy 1-tétralone par la 7-méthoxy 2-tétralone, on obtient le composé du titre.By proceeding as in preparation 1, but replacing in stage A 7-methoxy 1-tetralone with 7-methoxy 2-tetralone, the title compound is obtained.

PREPARATION 6 : 2-(6-METHOXY NAPHT-2-YL) ETHYLAMINEPREPARATION 6: 2- (6-METHOXY NAPHT-2-YL) ETHYLAMINE

En procédant comme dans la préparation 1, mais en remplaçant au stade A la 7-méthoxy 1-tétralone par la 6-méthoxy 2-tétralone, on obtient le composé du titre.By proceeding as in preparation 1, but replacing in stage A 7-methoxy 1-tetralone with 6-methoxy 2-tetralone, the title compound is obtained.

EXEMPLE 1 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREEEXAMPLE 1: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE

A une suspension de 0,01 mole de chlorhydrate de 2-(7-méthoxy napht-1-yl) éthylamine dans 5 cm³ de pyridine, ajouter goutte à goutte sous agitation magnétique 0,011 mole d'isocyanate de propyle. Agiter 1 heure à une température de 80°C, puis verser le milieu réactionnel sur de l'eau glacée. Acidifier par une solution d'acide chlorhydrique 1N. Le précipité forme est essoré, lavé à l'eau, séché, puis recristallisé dans un mélange toluène-cyclohexane.To a suspension of 0.01 mole of 2- (7-methoxy naphth-1-yl) ethylamine hydrochloride in 5 cm³ of pyridine, add dropwise 0.011 mole of propyl isocyanate with magnetic stirring. Stir for 1 hour at a temperature of 80 ° C., then pour the reaction medium over ice water. Acidify with a 1N hydrochloric acid solution. The precipitate formed is drained, washed with water, dried, then recrystallized from a toluene-cyclohexane mixture.

On obtient le composé du titre avec 93 % de rendement.
Point de fusion : 104-105°C
Caractéristiques spectrales en infra-rouge :

3300 cm⁻¹
: vNH (urée)
3040 - 2820 cm⁻¹
: vCH (alkyles)
1620 - 1600 cm⁻¹
: vCC (aromatiques)
The title compound is obtained with 93% yield.
Melting point : 104-105 ° C
Infrared spectral characteristics :
3300 cm⁻¹
: vNH (urea)
3040 - 2820 cm⁻¹
: vCH (alkyls)
1620 - 1600 cm⁻¹
: vCC (aromatic)

EXEMPLE 2 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-METHYLUREEEXAMPLE 2: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-METHYLUREE

En remplaçant dans l'exemple 1 l'isocyanate de propyle par l'isocyanate de méthyle, on obtient de la même façon le composé du titre
Caractéristiques spectrales en infra-rouge :

3280 cm⁻¹
: vNH (urée)
3060 - 2820 cm⁻¹
: vCH (alkyles)
By replacing, in Example 1, propyl isocyanate with methyl isocyanate, the title compound is obtained in the same way.
Infrared spectral characteristics :
3280 cm⁻¹
: vNH (urea)
3060 - 2820 cm⁻¹
: vCH (alkyls)

EXEMPLES 3 à 9EXAMPLES 3 to 9 ::

En remplaçant dans l'exemple 1, l'isocyanate de propyle par les isocyanates correspondants, on obtient de la même façon les produits des exemples suivants :
   EXEMPLE 3 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-ETHYLUREE
   EXEMPLE 4 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-BUTYLUREE
Point de fusion : 106- 107°C
   EXEMPLE 5 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-BENZYLUREE
   EXEMPLE 6 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-(4-CHLOROPHENYLMETHYL)UREE
   EXEMPLE 7 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-CYCLOPROPYLMETHYL UREE
   EXEMPLE 8 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-[BIS(4-CHLOROPHENYL)METHYL]UREE
   EXEMPLE 9 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-CYCLOPROPYLUREE
   EXEMPLE 10 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-PROPYLTHIOUREE
By replacing, in Example 1, propyl isocyanate with the corresponding isocyanates, the products of the following examples are obtained in the same way:
EXAMPLE 3: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-ETHYLUREE
EXAMPLE 4: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-BUTYLUREE
Melting point : 106-107 ° C
EXAMPLE 5: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-BENZYLUREE
EXAMPLE 6: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N ′ - (4-CHLOROPHENYLMETHYL) UREE
EXAMPLE 7: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-CYCLOPROPYLMETHYL UREE
EXAMPLE 8: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N ′ - [BIS (4-CHLOROPHENYL) METHYL] UREE
EXAMPLE 9: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-CYCLOPROPYLUREE
EXAMPLE 10: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-PROPYLTHIOUREE

En procédant comme dans l'exemple 1, mais en utilisant l'isothiocyanate de propyle, on obtient de la même façon le composé du titre :
Point de fusion : 95-97°C
Caractéristiques spectrales en infra-rouge :

3240 cm⁻¹
: vNH (thiourée)
3060 - 2800 cm⁻¹
: vCH (alkyles)
By proceeding as in Example 1, but using propyl isothiocyanate, the title compound is obtained in the same way:
Melting point : 95-97 ° C
Infrared spectral characteristics :
3240 cm⁻¹
: vNH (thiourea)
3060 - 2800 cm⁻¹
: vCH (alkyls)

EXEMPLES 11 à 14 :EXAMPLES 11 to 14:

En remplaçant dans l'exemple 10, l'isothiocyanate de propyle par les isothiocyanates correspondants, on obtient de la même façon les composés des exemples suivants :
   EXEMPLE 11 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-METHYLTHIOUREE
Point de fusion : 105-107°C
Caractéristiques spectrales en infra-rouge :

3200 cm⁻¹
: vNH (thiourée)

   EXEMPLE 12 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-ETHYLTHIOUREE
Point de fusion : 114-115°C
Caractéristiques spectrales en infra-rouge :
3205 cm⁻¹
: vNH (thiourée)

   EXEMPLE 13 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-BUTYLTHIOUREE
Point de fusion : 65-68°C
Caractéristiques spectrales en infra-rouge :
3240 cm⁻¹
: vNH (thiourée)

   EXEMPLE 14 : N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-ISOPROPYLTHIOUREE
Caractéristiques spectrales en infra-rouge :
3230 cm⁻¹
: vNH (thiourée)
By replacing, in Example 10, propyl isothiocyanate with the corresponding isothiocyanates, the compounds of the following examples are obtained in the same way:
EXAMPLE 11: N- [2- (7-METH O XY NAPHT-1-YL) -ETHYL] N′-METHYLTHIOUREE
Melting point : 105-107 ° C
Infrared spectral characteristics :
3200 cm⁻¹
: vNH (thiourea)

EXAMPLE 12: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-ETHYLTHIOUREE
Melting point : 114-115 ° C
Infrared spectral characteristics :
3205 cm⁻¹
: vNH (thiourea)

EXAMPLE 13: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-BUTYLTHIOUREE
Melting point : 65-68 ° C
Infrared spectral characteristics :
3240 cm⁻¹
: vNH (thiourea)

EXAMPLE 14: N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-ISOPROPYLTHIOUREE
Infrared spectral characteristics :
3230 cm⁻¹
: vNH (thiourea)

EXEMPLE 15 : N-METHYL N-[2-(7-METHOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREEEXAMPLE 15: N-METHYL N- [2- (7-METHOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la N 2-(7-méthoxy napht-1-yl)éthylamine par la N-[2-(7-méthoxy napht-1-yl)éthyl] N-méthylamine, on obtient de la même façon le composé du titre :
Caractéristiques spectrales en infra-rouge :

3290 cm⁻¹
: vNH (urée)
By replacing, in Example 1, N 2- (7-methoxy naphth-1-yl) ethylamine by N- [2- (7-methoxy napht-1-yl) ethyl] N-methylamine, same way the title compound:
Infrared spectral characteristics :
3290 cm⁻¹
: vNH (urea)

EXEMPLE 16 : N-[2-(NAPHT-1-YL) ETHYL] N′-PROPYLUREEEXAMPLE 16: N- [2- (NAPHT-1-YL) ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la 2-(7-méthoxy napht-1-yl)éthylamine par la 2-(napht-1-yl)éthylamine, on obtient de la même façon le composé du titre :
Caractéristiques spectrales en infra-rouge :

3280 cm⁻¹
: vNH (urée)
By replacing in Example 1, 2- (7-methoxy naphth-1-yl) ethylamine by 2- (napht-1-yl) ethylamine, the title compound is obtained in the same way:
Infrared spectral characteristics :
3280 cm⁻¹
: vNH (urea)

EXEMPLE 17 : N-[2-(7-HYDROXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREEEXAMPLE 17: N- [2- (7-HYDROXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la 2-(7-méthoxy napht-1-yl)éthylamine par la 2-(7-hydroxy napht-1-yl)éthylamine, on obtient de la même façon, après purification par chromatographie sur colonne de silice, le composé du titre :
Caractéristiques spectrales en infra-rouge :

3280 cm⁻¹
: vNH (urée)
3350 cm⁻¹
: vOH (phénol)
By replacing in Example 1, 2- (7-methoxy naphth-1-yl) ethylamine by 2- (7-hydroxy napht-1-yl) ethylamine, the same is obtained, after purification by chromatography on silica column, the title compound:
Infrared spectral characteristics :
3280 cm⁻¹
: vNH (urea)
3350 cm⁻¹
: vOH (phenol)

EXEMPLES 18 à 21 :EXAMPLES 18 to 21:

En opérant comme dans l'exemple 1, mais en utilisant l'éther de 1-(2-aminoéthyl) 7-hydroxy naphtyle correspondant, on obtient de la même façon les composés des exemples suivants :
   EXEMPLE 18 : N-[2-(7-ISOPROPYLOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREE
   EXEMPLE 19 : N-[2-(7-PHENOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREE
   EXEMPLE 20 : N-[2-(7-DIPHENYLMETHOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREE
   EXEMPLE 21 : N-[2-(7-CYCLOHEXYLOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREE By operating as in Example 1, but using the corresponding 1- (2-aminoethyl) 7-hydroxy naphthyl ether, the compounds of the following examples are obtained in the same way:
EXAMPLE 18: N- [2- (7-ISOPROPYLOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE
EXAMPLE 19: N- [2- (7-PHENOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE
EXAMPLE 20: N- [2- (7-DIPHENYLMETHOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE
EXAMPLE 21: N- [2- (7-CYCLOHEXYLOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE

EXEMPLE 22 : N-[2-(6-METHOXY NAPHT-1-YL)-ETHYL] N′-PROPYLUREEEXAMPLE 22: N- [2- (6-METHOXY NAPHT-1-YL) -ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la 2-(7-méthoxy napht-1-yl)éthylamine par la 2-(6-méthoxy napht-1-yl)éthylamine, on obtient de la même façon le composé du titre :
Caractéristiques spectrales en infra-rouge :

3300 cm⁻¹
: vNH (urée)
By replacing in Example 1, 2- (7-methoxy naphth-1-yl) ethylamine by 2- (6-methoxy napht-1-yl) ethylamine, the title compound is obtained in the same way:
Infrared spectral characteristics :
3300 cm⁻¹
: vNH (urea)

EXEMPLE 23 : N-[2-(5-METHOXY NAPHT-1-YL) ETHYL] N′-PROPYLUREEEXAMPLE 23: N- [2- (5-METHOXY NAPHT-1-YL) ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la 2-(7-méthoxy napht-1-yl)éthylamine par la 2-(5-méthoxy napht-1-yl)éthylamine, on obtient de la même façon le composé du titre :
Caractéristiques spectrales en infra-rouge :

3300 cm⁻¹
: vNH (urée)
By replacing in Example 1, 2- (7-methoxy naphth-1-yl) ethylamine by 2- (5-methoxy napht-1-yl) ethylamine, the title compound is obtained in the same way:
Infrared spectral characteristics :
3300 cm⁻¹
: vNH (urea)

EXEMPLE 24 : N-[2-(7-METHOXY NAPHT-2-YL ) ETHYL] N′-PROPYLUREEEXAMPLE 24: N- [2- (7-METHOXY NAPHT-2-YL) ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la 2-(7-méthoxy napht-1-yl)éthylamine par la 2-(7-méthoxy napht-2-yl)éthylamine, on obtient de la même façon le composé du titre :
Caractéristiques spectrales en infra-rouge :

3290 cm⁻¹
: vNH (urée)
By replacing in Example 1, 2- (7-methoxy naphth-1-yl) ethylamine by 2- (7-methoxy napht-2-yl) ethylamine, the title compound is obtained in the same way:
Infrared spectral characteristics :
3290 cm⁻¹
: vNH (urea)

EXEMLE 25 : N-[2-(6-METHOXY NAPHT-2-YL) ETHYL] N′-PROPYLUREEEXAMPLE 25: N- [2- (6-METHOXY NAPHT-2-YL) ETHYL] N′-PROPYLUREE

En remplaçant dans l'exemple 1, la 2-(7-méthoxy napht-1-yl)éthylamine par la 2-(6-méthoxy napht-2-yl)éthylamine, on obtient de la même façon le composé du titre :
Caractéristiques spectrales en infra-rouge :

3300 cm⁻¹
: vNH (urée)
By replacing in Example 1, 2- (7-methoxy naphth-1-yl) ethylamine by 2- (6-methoxy napht-2-yl) ethylamine, the title compound is obtained in the same way:
Infrared spectral characteristics :
3300 cm⁻¹
: vNH (urea)

EXEMPLE 26 : N-[2-(NAPHT-1-YL)-ETHYL] N′-BUTYLUREEEXAMPLE 26: N- [2- (NAPHT-1-YL) -ETHYL] N′-BUTYLUREE

En remplaçant dans l'exemple 16 l'isocyanate de propyle par l'isocyanate de butyle, on obtient de la même façon le produit du titre :
Caractéristiques spectrales en infra-rouge :

3275 cm⁻¹
: vNH (urée)
By replacing in propyl isocyanate in example 16 with butyl isocyanate, the title product is obtained in the same way:
Infrared spectral characteristics :
3275 cm⁻¹
: vNH (urea)

EXEMPLE 27 : TEST DE FIXATION AUX RECEPTEURS DE LA MELATONINEEXAMPLE 27 TEST FOR FIXING TO MELATONIN RECEPTORS

La fixation aux récepteurs de la mélatonine des composés de l'invention a été réalisée selon des techniques classiques sur des récepteurs de la pars tuberalis de mouton (Journal of Neuroendocrinology (1989), 1 (1), 1-4).The binding to melatonin receptors of the compounds of the invention was carried out according to conventional techniques on receptors of sheep pars tuberalis (Journal of Neuroendocrinology (1989), 1 (1), 1-4).

Les composés de l'invention se lient de manière extrêmement spécifique aux récepteurs de la mélatonine avec, pour les plus affins d'entre eux, une affinité de plus de 100 fois supérieure à celle de la mélatonine elle-même. Les meilleurs ont une constante de dissociation (Kd) de l'ordre de 10⁻¹³ mol. l⁻¹ contre 6,3.10⁻¹¹ mol.l⁻¹ pour la mélatonine elle-même.The compounds of the invention bind in an extremely specific manner to the melatonin receptors with, for the most refined of them, an affinity of more than 100 times greater than that of melatonin itself. The best have a dissociation constant (Kd) of the order of 10⁻¹³ mol. l⁻¹ against 6.3.10⁻¹¹ mol.l⁻¹ for melatonin itself.

EXEMPLE 28 : POTENTIALISATION DU SOMMEIL INDUIT PAR LES BARBITURIQUESEXAMPLE 28 POTENTIALIZATION OF SLEEP INDUCED BY BARBITURICS

50 mg.kg⁻¹ de pentobarbital sont injectés par voie intrapéritonéale à des souris (22-25 g). On mesure le temps d'apparition et la durée du sommeil. On admet qu'il y a sommeil lorsque les animaux perdent le réflexe de retournement. Les composés à tester sont administrés par voie intrapéritonéale 30 minutes avant l'injection du barbiturique. Les composés de l'invention augmentent la durée du sommeil induit par le pentobarbital.50 mg.kg⁻¹ of pentobarbital are injected intraperitoneally into mice (22-25 g). The time of onset and the duration of sleep are measured. We admit that there is sleep when the animals lose the turning reflex. The test compounds are administered intraperitoneally 30 minutes before the injection of the barbiturate. The compounds of the invention increase the duration of sleep induced by pentobarbital.

EXEMPLE 29 : ETUDE DE LA TOXICITE AIGUEEXAMPLE 29: STUDY OF ACUTE TOXICITY

La toxicité aiguë a été appréciée après administration orale à des lots de 8 souris (26 ± 2 grammes). Les animaux ont été observés à intervalles réguliers au cours de la première journée et quotidiennement pendant les deux semaines suivant le traitement. La DL50 entraînant la mort de 50 % des animaux, a été évaluée.
La DL50 des produits testés est supérieure à 1500 mg.kg⁻¹ pour les composés de l'invention étudiés ce qui indique la faible toxicité des composés de l'invention.Acute toxicity was assessed after oral administration in groups of 8 mice (26 ± 2 grams). The animals were observed at regular intervals during the first day and daily for two weeks after treatment. The LD50, resulting in the death of 50% of the animals, was evaluated.
The LD50 of the products tested is greater than 1500 mg.kg⁻¹ for the compounds of the invention studied, which indicates the low toxicity of the compounds of the invention.

EXEMPLE 30 : COMPOSITION PHARMACEUTIQUE : COMPRIMESEXAMPLE 30 PHARMACEUTICAL COMPOSITION: TABLETS

Comprimés dosés à 10 mg de N-[2-(7-méthoxy napht-1-yl)-éthyl] N′-propylurée

Figure imgb0003
10 mg N- [2- (7-methoxy naphth- 1 -yl) -ethyl] N′-propylurea tablets
Figure imgb0003

Claims (15)

1) Procédé de préparation des composés de formule générale I :
Figure imgb0006
 dans laquelle : - R représente un atome d'hydrogène ou un groupement OR₃ dans lequel R₃ représente un atome d'hydrogène, un radical alkyle de 1 à 6 atomes de carbone en chaîne droite ou ramifiée, un radical cycloalkyle ou cycloalkényle contenant de 3 à 8 atomes de carbone, un aryle éventuellement substitué, un arylalkyle ou diarylalkyle éventuellement substitués dans lesquels la chaine alkyle comporte de 1 à 6 atomes de carbone, - R₁ représente un atome d'hydrogène ou un groupe alkyle contenant de 1 à 6 atomes de carbone en chaîne droite ou ramifiée, - X représente un atome d'oxygène ou de soufre, - R₂ représente un alkyle inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, un cycloalkyle de 3 à 8 atomes de carbone éventuellement substitué, un (C₃-C₈)cycloalkyl-(C₁-C₆)alkyle éventuellement substitué, un aryle éventuellement substitué, un arylalkyle éventuellement substitué dont la chaine alkyle comprend de 1 à 6 atomes de carbone, ou un diarylalkyle éventuellement substitué dont la chaine alkyle comprend de 1 à 6 atomes de carbone,
avec la réserve que lorsque R et R₁ représentent un atome d'hydrogène et X représente un atome d'oxygène, R₂ ne peut pas représenter un radical phényle ou un radical phényle-2,6 disubstitué, - de leurs sels d'addition à une base pharmaceutiquement acceptable, - de leurs isomères, épimères, diastéréoisomères, étant entendu que : - le terme "substitué" associé aux expressions "aryle", "arylalkyle", "diarylakyle", signifie que le ou les noyaux aromatiques peuvent être substitués par un ou plusieurs groupements choisis parmi alkyle inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, alcoxy inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, hydroxy, halogène, nitro, et trifluorométhyle, - le terme "substitué" associé aux expressions "cycloalkyle", "cycloalkylalkyle" signifie que le système cyclique peut être substitué par un ou plusieurs groupements choisis parmi halogène, alkyle inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, et alcoxy inférieur de 1 à 6 atomes de carbone linéaire ou ramifié, - par groupement aryle on entend groupement pyridyle, phényle, naphtyle, thiényle, furyle, pyrimidyle, indolyle, benzofuryle, benzothiényle, ou quinolyle, caractérisé en ce que :
on traite une amine de formule générale (II) :
Figure imgb0007
 dans laquelle R et R₁ sont tels que définis dans la revendication 1, par un isocyanate ou un isothiocyanate de formule (III) :

        X = C = N - R₂   (III)

dans laquelle X et R₂ ont les mêmes significations que dans la revendication 1, de manière à obtenir les composés de formule (I),
composés de formule (I) qui peuvent être, si on le désire, - purifiés suivant une ou plusieurs méthodes de purification choisies parmi la cristallisation, la chromatographie sur colonne de silice, l'extraction, la filtration, et le passage sur charbon et/ou résine, - séparés, le cas échéant, sous forme pure ou sous forme de mélange, en leurs éventuels isomères optiques, - et/ou salifiés, par une base pharmaceutiquement acceptable. 1) Process for the preparation of the compounds of general formula I:
Figure imgb0006
 in which : - R represents a hydrogen atom or an OR₃ group in which R₃ represents a hydrogen atom, an alkyl radical of 1 to 6 carbon atoms in a straight or branched chain, a cycloalkyl or cycloalkenyl radical containing from 3 to 8 atoms carbon, optionally substituted aryl, optionally substituted arylalkyl or diarylalkyl in which the alkyl chain contains from 1 to 6 carbon atoms, - R₁ represents a hydrogen atom or an alkyl group containing from 1 to 6 carbon atoms in a straight or branched chain, - X represents an oxygen or sulfur atom, - R₂ represents a lower alkyl of 1 to 6 linear or branched carbon atoms, a cycloalkyl of 3 to 8 carbon atoms optionally substituted, a (C₃-C₈) cycloalkyl- (C₁-C₆) alkyl optionally substituted, an aryl optionally substituted , an optionally substituted arylalkyl, the alkyl chain of which contains from 1 to 6 carbon atoms, or an optionally substituted diarylalkyl, the alkyl chain of which comprises from 1 to 6 carbon atoms,
with the proviso that when R and R₁ represent a hydrogen atom and X represents an oxygen atom, R₂ cannot represent a phenyl radical or a disubstituted 2,6-phenyl radical, - their addition salts with a pharmaceutically acceptable base, - their isomers, epimers, diastereoisomers, Being heard that : - the term "substituted" associated with the expressions "aryl", "arylalkyl", "diarylakyle", means that the aromatic nucleus (s) may be substituted by one or more groups chosen from lower alkyl of 1 to 6 linear or branched carbon atoms , lower alkoxy of 1 to 6 linear or branched carbon atoms, hydroxy, halogen, nitro, and trifluoromethyl, - The term "substituted" associated with the expressions "cycloalkyle", "cycloalkylalkyle" means that the ring system can be substituted by one or more groups chosen from halogen, lower alkyl of 1 to 6 linear or branched carbon atoms, and lower alkoxy of 1 to 6 linear or branched carbon atoms, - by aryl group means pyridyl, phenyl, naphthyl, thienyl, furyl, pyrimidyl, indolyl, benzofuryl, benzothienyl, or quinolyl group, characterized in that:
an amine of general formula (II) is treated:
Figure imgb0007
 in which R and R₁ are as defined in claim 1, by an isocyanate or an isothiocyanate of formula (III):

X = C = N - R₂ (III)

in which X and R₂ have the same meanings as in claim 1, so as to obtain the compounds of formula (I),
compounds of formula (I) which may be, if desired, - purified according to one or more purification methods chosen from crystallization, chromatography on a silica column, extraction, filtration, and passage over charcoal and / or resin, - separated, where appropriate, in pure form or as a mixture, into their possible optical isomers, - And / or salified, with a pharmaceutically acceptable base. 2) Procédé de préparation selon la revendication 1 des composés de formule I pour lesquels R représente un atome d'hydrogène, un radical hydroxyle ou méthoxyle et R₁ représente un atome d'hydrogène, de leurs sels d'addition à une base pharmaceutiquement acceptable, et de leurs isomères, épimères, et diastéréo-isomères. 2) Process for the preparation according to claim 1 of the compounds of formula I for which R represents a hydrogen atom, a hydroxyl or methoxyl radical and R₁ represents a hydrogen atom, their addition salts with a pharmaceutically acceptable base, and their isomers, epimers, and diastereoisomers. 3) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-propylurée. 3) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-propylurea. 4) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-méthylurée 4) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-methylurea 5) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-éthylurée 5) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-ethylurea 6) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-butylurée 6) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-butylurea 7) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-propylthiourée 7) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-propylthiourea 8) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-méthylthiourée 8) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-methylthiourea 9) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-éthylthiourée 9) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-ethylthiourea 10) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(7-méthoxynapht-1-yl)-éthyl] N′-butylthiourée 10) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (7-methoxynapht-1-yl) -ethyl] N′-butylthiourea 11) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(napht-1-yl)-éthyl] N′-propylurée 11) Process for the preparation according to claim 1 of the compound of formula I which is N- [2- (naphth-1-yl) -ethyl] N′-propylurea 12) Procédé de préparation selon la revendication 1 du composé de formule I qui est la N-[2-(napht-1-yl)-éthyl] N′-butylurée 12) A method of preparation according to claim 1 of the compound of formula I which is N- [2- (napht-1-yl) -ethyl] N′-butylurea 13) Procédé de préparation d'une composition pharmaceutique contenant comme principe actif au moins un composé préparé selon l'une des revendications 1 à 12, seul ou en combinaison avec un ou plusieurs excipients ou véhicules inertes non-toxiques, pharmaceutiquement acceptables. 13) Process for the preparation of a pharmaceutical composition containing as active principle at least one compound prepared according to one of claims 1 to 12, alone or in combination with one or more inert non-toxic, pharmaceutically acceptable excipients or vehicles. 14) Procédé de préparation selon la revendication 13 d'une composition pharmaceutique utile dans le traitement des troubles du système mélatoninergique, du stress, de l'anxiété, des dépressions saisonnières, des insomnies et fatigues dues aux décalages horaires, des schizophrénies, de l'attaque de panique, de la mélancolie, des troubles de l'appétit, de l'insomnie, des troubles psychotiques, de l'épilepsie, de la maladie de Parkinson, de la démence sénile, des divers désordres liés au vieillissement normal ou pathologique, des pertes de mémoire, de la maladie d'Alzheimer, ainsi que des troubles de la circulation cérébrale, de certains cancers, du psoriasis, de l'acné, de la séborrhée ou en tant qu'inhibiteur de l'ovulation ou en médecine vétérinaire dans les troubles du pelage. 14) A method of preparation according to claim 13 of a pharmaceutical composition useful in the treatment of disorders of the melatoninergic system, stress, anxiety, seasonal depressions, insomnia and fatigue due to jetlag, schizophrenia, panic attack, melancholy, appetite disorders, insomnia, psychotic disorders, epilepsy, Parkinson's disease, senile dementia, various disorders related to normal or pathological aging , memory loss, Alzheimer's disease, as well as cerebral circulation disorders, certain cancers, psoriasis, acne, seborrhea or as an ovulation inhibitor or in medicine veterinarian in coat disorders.
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US5981571A (en) * 1996-12-10 1999-11-09 Bristol-Myers Squibb Company Benzodioxa alkylene ethers as melatonergic agents
US6028112A (en) * 1997-05-23 2000-02-22 Bristol-Myers Squibb Company Spirocyclopropyl fluorenes as melatonergic agents
FR2778662A1 (en) * 1998-05-12 1999-11-19 Adir New substituted cyclic esters and amides useful as melatoninergic agents for treating e.g. anxiety, senile dementia, jet lag and seasonal depression
WO1999058495A1 (en) * 1998-05-12 1999-11-18 Adir Et Compagnie Novel substituted cyclic compounds, preparation method and pharmaceutical compositions containing them
WO1999058496A1 (en) * 1998-05-12 1999-11-18 Adir Et Compagnie Novel substituted cyclic compounds, preparation method and pharmaceutical compositions containing them
US6872851B1 (en) * 1998-05-12 2005-03-29 Les Laboratories Servier Substituted cyclic compounds, preparation method and pharmaceutical compositions containing them
US7115752B2 (en) * 1998-05-12 2006-10-03 Les Laboratoires Servier Substituted cyclic compounds
US7126012B2 (en) 1998-05-12 2006-10-24 Les Laboratoires Servier Substituted cyclic compounds
CN100358584C (en) * 2002-12-20 2008-01-02 古尔比特公司 Novel compositions magnetic particles covered with gem-bisphosphonate derivatives
CN104276979A (en) * 2013-07-10 2015-01-14 江苏豪森药业股份有限公司 Preparation method of agomelatine intermediate
CN104276979B (en) * 2013-07-10 2018-09-07 江苏豪森药业集团有限公司 The preparation method of agomelatine intermediate body

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NZ244051A (en) 1995-02-24
ES2074846T3 (en) 1995-09-16
US5389683A (en) 1995-02-14
AU2125192A (en) 1993-02-25
US5449689A (en) 1995-09-12
US5449690A (en) 1995-09-12
JPH0692926A (en) 1994-04-05
DE69202313T2 (en) 1996-01-25
CA2076589C (en) 1998-08-11
FR2680507A1 (en) 1993-02-26
JPH0780831B2 (en) 1995-08-30
FR2680507B1 (en) 1993-10-08
ATE122035T1 (en) 1995-05-15
CA2076589A1 (en) 1993-02-24
ZA926328B (en) 1993-03-11
DE69202313D1 (en) 1995-06-08
EP0530087B1 (en) 1995-05-03
DK0530087T3 (en) 1995-10-02
US5385944A (en) 1995-01-31
AU646968B2 (en) 1994-03-10

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